2690706691 has 8 divisors (see below), whose sum is σ = 2701271664. Its totient is φ = 2680154880.

The previous prime is 2690706677. The next prime is 2690706701. The reversal of 2690706691 is 1966070962.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2690706691 is a prime.

It is a super-3 number, since 3×2690706691³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2690706091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 632331 + ... + 636571.

It is an arithmetic number, because the mean of its divisors is an integer number (337658958).

Almost surely, 2^2690706691 is an apocalyptic number.

2690706691 is a deficient number, since it is larger than the sum of its proper divisors (10564973).

2690706691 is a wasteful number, since it uses less digits than its factorization.

2690706691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6581.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 2690706691 is about 51872.0222374258. The cubic root of 2690706691 is about 1390.8771943542.

The spelling of 2690706691 in words is "two billion, six hundred ninety million, seven hundred six thousand, six hundred ninety-one".